Smoke-consuming device



(No Model.)

W. E. HALL.

. l SMOKE GOSUMING DEVICE. No. 283,600. y Patented Angel, 1883.

Maf @KM @fd ffm? UNITED STATES PATENT' OEEICE.

WILLIAM PERRY HALL, or rIQUA, oHIo.

sMo'KE-coNsun/HNG oEvloE.

' SPECFICATIGN forming part of Letters Patent No. 283,600, dated August21, 1883.

Application filed December 4, 1882. (No model.)

To @ZZ whom it may con/cern.-

Beit known that I, XVILLIAM l?. HALL, of Piqua, in the county of Miami,and in the lState of Ohio, have invented certain new and usefulImprovements in Devices for Consuming Smoke and I do hereby declare thatthe following is a` full, clear, and exact description thereof,reference being had to the accompanying drawings, and to the letters ofmeans illustrated in the accompanying draw ings, in which Figure Irepresents a longitudinal sectional view, showing my'invention appliedto a steam boiler furnace, the section being taken on the line 'x x of'Fig. 2; Fig. 2, a front elevation of the furnace; and Fig. 3 representsa transverse or cross-sectional view on the line y y of Fig. l.

The letter A indicatesthe masonry or brick walls inclosing andsupporting a steam-boiler,

B, and within which, and below the boiler, is located and constructed myimproved furnace C, which is formed or built of iirebrick, or any othermaterial the nature of which adapts it to withstand the action ofexcessive heat.

The letter C designates the lire-box of the furnace, the same beingprovided with .suitable grate-bars, D,and an. ash-pit, E, immediatelybelow the said bars.

The letter F `indicates a fire -bridge just back of the nre-box, and Ganother or second fire-bridge at the rear of the bridge F, said bridgesbeing made integral with and forming a part of the improved furnace.Between said nre-bridges is a chamber, H, having a curved bottom, asindicated in Fig. 1 of the drawings, and directly above the curvedbottom of said chamber is located an arched partition, I, which embracesthe low er part of the boiler and extends downward about half-way of thesaid chamber, forming, with the firebridges, detlectors, which cause thedames from the combustion-chamber or fire-box to take a tortuous coursein their passage under the boiier.I

The letter K indicates a lateral air-passage in the lower portion of themasonry of the furnace, from which branch the passages L, leading totheA chamber H, in order to supply air -to the unconsumed gases passingover from the burning fuel, in order to insure their con.

sumption.

The letter It indiates a damper locatedin the eduction-flue of theboiler-furnace, and controlled by a rod,S, by means of which the draftthrough the furnace may be regulated. f The passages L terminate in aseries of openings, Z, arranged in two parallel rows, one above theother, and alternating with each other, as indicated in Fig. 3 of thedrawings. rIhis causes the heated air to be delivered in a thin sheet orsheets, or a series of parallel l jets, to the gases passing from thedre-box, in-

suring thorough and effective combustion.

'The chamber H at one side is provided with an opening, T, (providedwith a suitable plug,)

through which any ashes or accumulations the said passages Lcommunicating with a passage, K, leading to the open air, substantiallyas and for the purpose speciiied.

In testimony whereof I affix my signature, inpresence of two witnesses,this 3d day of July, 1882.

WILLIAM PERRY HALL.

Vitnesses:

SAM ZOLLLNGER, WILL ZOLLINGER.

